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Here's epi… twitter. It borked his system… twitter. They sent us a non-vegan pizza. Blog at WordPress. Follow Following. The Data Center Overlords Join other followers. Sign me up. Already have a WordPress. Log in now. Loading Comments Email Required Name Required Website. If we try the same on the other switches, the output will still shows us that our channels are up and running. To test our connectivity, we will try to ping the PCs connected to the switches.
In case the ether channel link is not operational, we can troubleshoot to find the errors and try to fix them. As we have seen, ether channel technology is convenient for increasing our bandwidth and redundancy in our networks without the redundant links being blocked by the Spanning Tree Protocol.
One can find more information about ether channel technology here. Peer Review Contributions by: Briana Nzivu. His interests are web development and networking. Dennis has a great passion for developing web applications and configuring networks. Discover Section's community-generated pool of resources from the next generation of engineers. The simple, flexible deployment options your customers expect with the low overhead your team craves. For Infrastructure Providers. Simple, centralized, intelligent management of distributed compute locations on massive scale.
Port-channel 3 configurations using PAgp mode desirable. A good understanding on how to configure switches using packet tracer. It is best for the reader to know how to work with the Cisco packet tracer.
What is EtherChannel technology? EtherChannel terminologies EtherChannel - A port-channel architecture that groups together multiple physical Ethernet links into a single logical link that provides fault-tolerant, high-speed, and redundant links between switches and other network devices.
Spanning Tree Protocol - Is a data link layer protocol that prevents loops in networks with redundant links. Physically, the CE switch is cabled to two independent FabricPath switches.
Those two switches are in a vPC domain. This logical switch is advertised to the rest of the FabricPath network as being the edge switch where the CE switch is connected. This is the key to enabling load balancing of traffic egressing the fabric towards the CE switch. In the sample network above, in order to reach the CE switch, Switch 1 will address its FabricPath frames to Switch 4 for which it has 2 equal-cost paths.
If the logical topology mirrored the physical topology, Switch 1 would have to address its frames to either Switch 2 or Switch 3 but not both because the FabricPath forwarding table can only hold a single switch ID for a given destination which would result in no load balancing.
Another spin on vPC! EvPC allows that exact topology. Between the Nexus s and the FEXes, the FCoE storage traffic maintains that traditional "air gap" between the A and B sides and never crosses onto a common network element.
This is accomplished through explicit configuration on the s which tells the left FEX to only send FCoE traffic to the left and right FEX only to the right The regular Ethernet traffic can traverse any of the links anywhere in the topology.
Disclaimer : The opinions and information expressed in this blog article are my own and not necessarily those of Cisco Systems. A port channel does a couple of things: Increases the available bandwidth between two devices.
Creates one logical path out of multiple physical paths.
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